/* 后台管理样式 - 科幻主题 */
:root {
    --primary-color: #00d4ff;
    --primary-glow: rgba(0, 212, 255, 0.3);
    --secondary-color: #0099cc;
    --accent-color: #ff6b35;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-bg: #0a0e17;
    --darker-bg: #050810;
    --card-bg: rgba(30, 41, 59, 0.8);
    --sidebar-bg: linear-gradient(180deg, #0f172a 0%, #0a0e17 100%);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: rgba(0, 212, 255, 0.2);
    --hover-bg: rgba(0, 212, 255, 0.1);
    --glass-bg: rgba(15, 23, 42, 0.7);
    --neon-glow: 0 0 20px rgba(0, 212, 255, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--darker-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* 背景网格效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* 登录页面 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    pointer-events: none;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}

.login-container {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    backdrop-filter: blur(10px);
    box-shadow: var(--neon-glow);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    margin: 0 auto 1.5rem;
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.4);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { box-shadow: 0 10px 40px rgba(0, 212, 255, 0.4); }
    to { box-shadow: 0 10px 60px rgba(0, 212, 255, 0.6); }
}

.login-header h1 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-header p {
    color: var(--text-secondary);
}

.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.login-form input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
}

.login-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.login-btn:hover::before {
    left: 100%;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

/* 管理后台布局 */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    box-shadow: 5px 0 30px rgba(0, 0, 0, 0.3);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.sidebar-logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.3);
}

.sidebar-logo-text {
    font-weight: 700;
    font-size: 1.2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.sidebar-nav {
    padding: 1.5rem 0;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-title {
    padding: 0 1.5rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 1.5px;
    margin-bottom: 0.75rem;
    opacity: 0.7;
}

.nav-menu {
    list-style: none;
}

.nav-item {
    margin-bottom: 0.25rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    margin: 0 0.75rem;
    border-radius: 0 10px 10px 0;
}

.nav-link:hover,
.nav-link.active {
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.1), transparent);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.nav-link i {
    width: 24px;
    text-align: center;
    font-size: 1.1rem;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    position: absolute;
    bottom: 0;
    width: 100%;
    background: var(--sidebar-bg);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}

.user-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.logout-btn {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.625rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: rgba(239, 68, 68, 0.1);
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 2rem;
    min-height: 100vh;
}

/* 内容头部 */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.content-header h2 {
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.content-actions {
    display: flex;
    gap: 0.75rem;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--neon-glow);
    border-color: var(--primary-color);
}

.stat-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

.stat-icon.blue {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 153, 204, 0.2));
    color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.2);
}

.stat-icon.green {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(5, 150, 105, 0.2));
    color: var(--success-color);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.2);
}

.stat-icon.orange {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(217, 119, 6, 0.2));
    color: var(--warning-color);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.2);
}

.stat-icon.red {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(220, 38, 38, 0.2));
    color: var(--danger-color);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.2);
}

.stat-info h3 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 卡片 */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
}

.card-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 1.5rem;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 10px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
}

.btn-success {
    background: var(--success-color);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}

/* 表格 */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(0, 0, 0, 0.2);
}

.table tbody tr {
    transition: all 0.3s ease;
}

.table tbody tr:hover {
    background: rgba(0, 212, 255, 0.05);
}

.table-responsive {
    overflow-x: auto;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.625rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.form-control::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-grid .form-group {
    margin-bottom: 0;
}

.form-grid .form-group:last-child {
    margin-bottom: 1.5rem;
}

.form-grid .form-group.full-width {
    grid-column: 1 / -1;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.required {
    color: var(--danger-color);
}

/* 状态标签 */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.875rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status-badge.status-active {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-badge.status-inactive {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.status-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

/* 角色标签 */
.role-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

.role-badge.role-super {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(217, 119, 6, 0.2));
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.role-badge.role-admin {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 153, 204, 0.2));
    color: var(--primary-color);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.role-badge.role-editor {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(5, 150, 105, 0.2));
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* 编辑器 */
.editor-container {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.editor-toolbar {
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.editor-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.editor-btn:hover {
    background: var(--hover-bg);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.editor {
    border: none;
    resize: vertical;
    min-height: 250px;
    background: rgba(0, 0, 0, 0.2);
}

.editor:focus {
    outline: none;
}

/* 响应式 */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .content-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .table-responsive {
        display: block;
        overflow-x: auto;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}